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Título: | Seasonal Storage for Space Heating using Solar DHW Surplus | Autor: | Brites, Gonçalo Garruço, Manuel Fernandes, Marco S. Pinto, Diogo M. Sá Gaspar, Adélio Rodrigues |
Palavras-chave: | Solar energy; Seasonal thermal energy storage; Sensible heat storage; DHW; Space heating; Contents | Data: | Jun-2024 | Editora: | Elsevier | Projeto: | POCI-01-0247-FEDER-047070 2022.03339.PTDC UIDB/50022/2020 |
Título da revista, periódico, livro ou evento: | Renewable Energy | Resumo: | Due to the seasonality of solar energy, achieving 100 % of annual solar fraction for domestic hot water (DHW) production is only possible by greatly oversizing the collector area of a solar system, thus creating a significant energy surplus in summer. This simulation study investigates the possibility of using this surplus to promote space heating during winter, in a moderate South European climate, to try achieving a total solar fraction of 100 %. Priority is given to the DHW reservoir, diverting the excess heat to an additional large-capacity seasonal thermal energy storage (STES) reservoir. The best configuration for the number of collectors and STES tank volume was assessed through a parametric study, to reach a compromise between a high solar fraction and a reasonable system efficiency. The results showed that a system with 10 m2 of solar collectors and a 30 m3 STES tank or, alternatively, 20 m2 of collectors and a 20 m3 tank achieved the desired solar fraction and efficiency for the chosen building and local climate conditions. A comparison with the literature shows that this strategy can achieve better results, requiring less collector area and storage volume. | URI: | https://hdl.handle.net/10316/115730 | ISSN: | 0960-1481 | DOI: | 10.1016/j.renene.2024.120889 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais I&D ADAI - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Brites_et_al._-_2024_-_Seasonal_Storage_for_Space_Heating_using_Solar_DHW_Surplus.pdf | 9.48 MB | Adobe PDF | Ver/Abrir |
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